.box {
    width: 1200px;
    margin: auto;
}
.ulBox ul>li{
    font-size: 14px;
    float: left;
    list-style: none;
    margin: 10px;
    padding: 5px;
    border-radius: 15px;
    cursor: pointer;
    color: #707070;
}
.ulBox{
    display: flex;
  flex-direction: column;
  margin-bottom: 10px;
}
.ulBox ul{
    flex: 1;
}
.liActive{
    background-color: rgba(255, 192, 203,.5);

}

.mvBox{
    display: inline-block;
    width: 285px;
    height: 220px;
margin-right: 20px;
margin-bottom: 20px;
}
.mvBoxImg{
    height: 180px;
    position: relative;
}
.playMvBg{
    position: absolute;
    top: 0px;
    left: 0px;
    width: 285px;
    height: 180px;
    border-radius: 10px;
    background-color: rgba(0, 0,0 , 0.5);
    z-index: 99;
    cursor: pointer;
    display: none;
}
.aa {
    position: absolute;
    top: 80px;
    left: 125px;
    display: none;
    z-index: 9;
}
.mvBox:hover .aa{
    display: block;
}
.mvBox:hover .playMvBg{
    display: block;
}
.ima {
    width: 100%;
    height: 100%;
    border-radius: 10px;
}
.mvBox:nth-child(4n){
    margin-right: 0px;
}
.playNum {
    position: absolute;
    right: 10px;
    top: 10px;
    font-size: 12px;
    color: #707070;
    line-height: 16px;
    background-color: none!important;
}
.tro {
    color: white;
    padding-left: 10px;
    font-size: 14px;
}
.el-pagination.is-background .el-pager li:not(.disabled).active {
    background-color: #ffc0cb;
}
/* 切换键居中 */
.bb{
   display: flex;
   justify-content: center;
}